1. Department of Medical Oncology; Netherlands Cancer Institute; Amsterdam the Netherlands
2. Department of Biometrics; Netherlands Cancer Institute; Amsterdam the Netherlands
3. Department of Oncology; VU University Medical Center; Amsterdam the Netherlands
4. Department of Oncology & Prostate Cancer Center; Sint Franciscus Gasthuis; Rotterdam the Netherlands
5. Department of Urology; Radboud University Nijmegen Medical Centre; Nijmegen the Netherlands
6. Department of Oncology Tergooi Ziekenhuizen; Blaricum the Netherlands
7. Department of Oncology; Sint Antonius Hospital; Nieuwegein the Netherlands
8. Department of Medical Oncology; Maastricht University Medical Centre; Maastricht the Netherlands
9. Department of Oncology; Isala Klinieken; Zwolle the Netherlands
10. Department of Clinical Oncology; Leiden University Medical Center; the Netherlands
11. Department of Urology; University of Groningen; Groningen the Netherlands
12. Department of Oncology; OLVG Hospital; Amsterdam the Netherlands
13. Department of Internal Medicine; Medisch Centrum Alkmaar; Alkmaar the Netherlands
14. Department of Oncology; Rijnstate Hospital; Arnhem the Netherlands
15. Department of Internal Medicine/Oncology; Atrium-Orbis Medical Center; Heerlen the Netherlands